But restrictions will remain while the EU appeals the decision.
The court said the companies were claimed by the EU to be controlled or otherwise linked to Islamic Republic of Iran Shipping Lines (IRISL), which had previously been put under sanctions over its alleged involvement in supporting Iran's nuclear programme.
Reuters named one of them as Hamburg-based Ocean Capital Administration.
The court ruled the EU had not given valid reasons for saying that IRISL was supporting the government.
The
